# tec2SKILL Pneumatics vs Circuit Simulator

The clearest difference is review sentiment: Circuit Simulator at 77% against tec2SKILL Pneumatics's 17%. Circuit Simulator also leads on update cadence (every 6 weeks vs every 14 months). tec2SKILL Pneumatics's advantage is in-app purchases (none vs 8). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Circuit Simulator sells 8 in-app purchases, starting at $0.99 per month. tec2SKILL Pneumatics asks for nothing beyond the download.

tec2SKILL Pneumatics ships an update every 14 months, Circuit Simulator every 6 weeks. The most recent releases landed on October 7, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | tec2SKILL Pneumatics | Circuit Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (87 ratings)](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364/reviews)** |
| Number of ratings | — | **87** |
| Positive reviews | 16.7% of reviews | **76.9% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 14 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2.4 GB | 103 MB |
| Requires iOS | **15.0** | 15.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ETS DIDACTIC GMBH](https://appshunter.io/developer/1209946511) | [Sindhu Gopi](https://appshunter.io/developer/1773585161) |

## What reviewers say

### tec2SKILL Pneumatics

[App page](https://appshunter.io/ios/app/tec2skill-pneumatics/id1225564970)

This digital assistant aids in learning pneumatics and electro-pneumatics. It supports the training system from ETS DIDACTIC GMBH, covering various industrial and technical professions.

**Highlights:** Digital learning assistant, Pneumatics education, Electro-pneumatics education, Supports ETS DIDACTIC GMBH system, Aids industrial training, Covers multiple technical professions

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Circuit Simulator

[App page](https://appshunter.io/ios/app/circuit-simulator-voltsim/id6736870364)

Design and simulate electronic and digital circuits in real-time. Visualize voltage and current flow, and analyze circuit behavior with tools like oscilloscopes and multimeters. Offers a user-friendly experience for circuit design and digital electronic analysis.

**Highlights:** Real-time electronic circuit simulation, Digital circuit simulation, Voltage and current analysis, Multichannel oscilloscope, Multimeter tools, Circuit design and tuning

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Extensions Subscription | $0.99 | per month |
| Sensors Extension | $0.99 | one-time |
| Custom Chips Extension | $1.99 | one-time |
| Instruments extension | $2.99 | one-time |
| Analog Extension | $3.99 | one-time |
| Misc Extension | $3.99 | one-time |
| Digital Extension | $3.99 | one-time |
| Extension Pack | $12.99 | one-time |


## Frequently asked questions

### Is tec2SKILL Pneumatics free?

tec2SKILL Pneumatics is free to download, with no in-app purchases.

### Is Circuit Simulator free?

Circuit Simulator is free to download, with in-app purchases available.

### Do tec2SKILL Pneumatics or Circuit Simulator have ads?

Neither tec2SKILL Pneumatics nor Circuit Simulator shows ads.

### Which is updated more often, tec2SKILL Pneumatics or Circuit Simulator?

tec2SKILL Pneumatics ships an update every 14 months, and Circuit Simulator every 6 weeks. Most recently, tec2SKILL Pneumatics was updated on October 7, 2026 and Circuit Simulator on October 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*